feat: add Sentry source map upload configuration and update environment variables

src/hooks/queries/useWatchedItemsQuery.ts

@@ -31,7 +31,9 @@ export const useWatchedItemsQuery = (enabled: boolean) => {
         throw new Error(error.message || 'Failed to fetch watched items');
       }
 
-      return response.json();
+      const json = await response.json();
+      // API returns { success: true, data: [...] }, extract the data array
+      return json.data ?? json;
     },
     enabled,
     // Keep data fresh for 1 minute since users actively manage watched items